Why did my Dutch baby not puff up?
Ensure your cast-iron skillet is very hot (preheated 5–10 minutes at 425°F) before pouring the batter, and avoid opening the oven door in the first 15 minutes of baking.
Can I make the batter ahead of time?
Yes, prepare it up to 2 hours in advance and refrigerate. Whisk briefly before pouring into the hot skillet.
What if I don't have cremini mushrooms?
Button, portobello, or oyster mushrooms work equally well; adjust size by quartering larger varieties.
Is this recipe vegan?
No, it contains eggs and butter. Substitute eggs with a flax or chia egg and use vegan butter to make it plant-based.
Can I scale this recipe?
This recipe serves 2–3 as a main. Double the batter and mushroom topping for 4–6 servings, using two cast-iron skillets or baking in batches.